Solution technique for pure-component phase equilibria near the critical point

AIChE Journal ◽  
2006 ◽  
Vol 52 (4) ◽  
pp. 1594-1599 ◽  
Author(s):  
L. N. Stapley ◽  
K. D. Luks
Keyword(s):  
Phase Equilibria ◽  
Critical Point ◽  
Pure Component ◽  
Solution Technique ◽  
Component Phase

Phase equilibria in Hg-He mixtures near the critical point of almost pure Hg

1990 ◽  
Vol 4 (1-6) ◽  
pp. 604-606
Author(s):  
G. Schönherr ◽  
W. Götzlaff ◽  
G. Schäfer ◽  
F. Hensel
Keyword(s):  
Phase Equilibria ◽  
Critical Point

scholarly journals The Joule-Thomson Effect for Refrigerants with Dopants of the Fullerenes and Carbon Nanotubes

2018 ◽  
Vol 54 (4) ◽  
pp. 38-44
Author(s):  
М. Petrenko ◽  
S. Artemenko ◽  
D. Nikitin
Keyword(s):  
Carbon Dioxide ◽  
Carbon Nanotubes ◽  
Thermodynamic Properties ◽  
Phase Equilibria ◽  
Critical Point ◽  
Reduced Form ◽  
Thomson Effect ◽  
Nanoparticle Concentration ◽  
Classical Fluids ◽  
Working Media

The importance of thermodynamic and phase behavior of working fluids embedded with nanostructured materials is fundamental to new nanotechnology applications. The fullerenes (C60) and carbon nanotubes (CNT) adding to refrigerants change their thermodynamic properties the Joule – Thomson effect such as dislocation of critical point, gas – liquid equilibria shift at alias. Algorithm of refrigerant thermodynamic property calculations based on the NIST (National Institute of Standards and Technologies) equation of state at different carbon nanotube concentrations is proposed. Thermodynamic properties of carbon dioxide in the C60 and CNT presence are given.  Considering the extremely large number of different both nanoparticle types and reference fluids, it is obvious that there is need for developing theoretically sound methods of the prompt estimation thermodynamic properties and phase equilibria for emerging working media. The effect of nanoparticles on the critical point shift for classical fluids doped by nanoparticles is examined. The regular and singular parts of thermodynamic surface of reference fluid and nanofluid (volume nanoparticle concentration < 5%) are suggested to coincide in the reduced form. The shift of critical point for nanoliquids of industrial interest is theoretically predicted. Results of calculations of phase equilibria for some nanofluids are described.

Areas of J. C. Maxwell for Pure-Component Fluid-Phase Equilibria from Equations of State

1996 ◽  
Vol 35 (7) ◽  
pp. 2431-2437 ◽  
Author(s):  
Nishawn S. M. Hanif ◽  
Guor-Shiarn Shyu ◽  
Kenneth R. Hall ◽  
Philip T. Eubank
Keyword(s):  
Phase Equilibria ◽  
Equations Of State ◽  
Fluid Phase ◽  
Pure Component ◽  
Fluid Phase Equilibria

scholarly journals Comparison of CP-PC-SAFT and SAFT-VR-Mie in Predicting Phase Equilibria of Binary Systems Comprising Gases and 1-Alkyl-3-methylimidazolium Ionic Liquids

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6621
Author(s):  
Asaf Chiko ◽  
Ilya Polishuk ◽  
Esteban Cea-Klapp ◽  
José Matías Garrido
Keyword(s):  
Phase Diagram ◽  
Ionic Liquids ◽  
Phase Equilibria ◽  
Critical Point ◽  
Binary Systems ◽  
Variable Range ◽  
Preliminary Estimation ◽  
Global Phase Diagram ◽  
Mie Potential

This study compares performances of the Critical Point-based revision of Perturbed-Chain SAFT (CP-PC-SAFT) and the SAFT of Variable Range and Mie Potential (SAFT-VR-Mie) in predicting the available data on VLE, LLVE, critical loci and saturated phase densities of systems comprising CO, O2, CH4, H2S, SO2, propane, the refrigerants R22, R23, R114, R124, R125, R125, R134a, and R1234ze(E) and ionic liquids (ILs) with 1-alkyl-3-methylimidazolium ([Cnmim]+) cations and bis(trifluoromethanesulfonyl)imide ([NTf2]−), tetrafluoroborate ([BF4]−) and hexafluorophosphate ([PF6]−) anions. Both models were implemented in the entirely predictive manner with k12 = 0. The fundamental Global Phase Diagram considerations of the IL systems are discussed. It is demonstrated that despite a number of quantitative inaccuracies, both models are capable of reproducing the regularities characteristic for the considered systems, which makes them suitable for preliminary estimation of selectivity of the ILs in separating various gases.

Sign in / Sign up

Export Citation Format

Share Document